Thill-coupling.



No. 756,726. PATBNTED APR. 5, 1904.

.J. A. ST

THILL 00 n G. APPLIOATION rmm ROV.19, 1902. no menu.

NEESEE 55 I wam Q/ 1 J a 9 1 1* 5? UNITED STATES Patented April 5, 1904.

JOHN A. STEELE, OF MINNEAPOLIS, MINNESOTA.

Tl-llLL-COUPLING.

SPECIFICATION forming part of Letters Patent N0. 756,726, dated April 5, 1904.

Application filed November 19, 1902. Serial No. 132,010. (No model.)

To all whom it may concern.-

Be itknown thatI, JOHN A. STEELE, of Minneapolis, county of Hennepin, and State of Minnesota, have invented new and useful Improvements in Carriage-Shackles, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, in which Figure 1 is a side elevation of my improved shackle, a portion of the shaft, and a crosssection of the carriage-axle as viewed from the right; Fig. 2, the same as viewed from left; Fig. 3, a top view of the same; and Figs.

- i and 5, horizontal sections of Fig. 1, taken on the line i I.

Similar letters refer to similar parts.

This invention relates to improvements in carriage-shackles, my .purpose being to provide means for taking up lost motion, (the wear,) and thereby prevent the rattle common to shackles in general. This purpose I accomplish' through the use of the mechanism herein shown, hereinafter described, and particularly referred to in the claim.

In the drawings, A is the carriage-axle; B, the clip; O, the shaft-iron, and D the coupling-bolt.

The carriage-axle A is not unlike those commonly used, and hence needs no description herein.

The clip B is similar to those commonly used save that the horizontal openings at of its ears I) are respectively of different diameters, one of which is interiorly threaded, as shown in Fig. 4c.

The shaft-iron O is similar to those now in use save that the horizontal opening therein is tapering (larger at one end than at the other) and that it is provided with an opening 0, through which oil may be introduced for purposes of lubrication.

The coupling-bolt D is an important feature of my invention and is as follows: One'end of this coupling-bolt is provided with a square or hexagonal head (Z, adapted to receive the jaws of a wrench, as shown in Fig. 4, or is slotted to receive the blade of a screw-driver, as shown in Fig. 5, as the manufacturer may elect. A portion 0, adjacent to the head d, is turned to fit the larger opening a of the ear I) closely. Another portion f is threaded, thus adapting it to be received in the smaller threaded opening a of the ear 6, and still another portion 9 (the portion lying between the two last-named portions 6 and f) is made tapering to fit into the tapering opening in the shaft-iron C, as shown in Fig. 4:. A threaded jam-nut k may be screwed onto the threaded portion f of the coupling-bolt D, which extends outward and beyond the side of the ear 6 of the clip B. This nut prevents the bolt D from working loose. Between the smaller threaded portion f and the tapered portion 9 is an annular groove z. pered portion g somewhat shorter than the opening in the shaft-iron 0, thereby providing for longitudinal adjustment, hereinafter described.

In Fig. 5 I show the same general construction, the only difference being that both of the ears I) of the clip B are threaded and the coupling-bolt D has two threaded portions. This construction will accomplish the same results as the one above described, but 1 prefer the construction shown in Fig. 4.

It is apparent that the lost motion (the wear) upon the bolt D and shaft-iron C may be taken up by applying a wrench or screw-driver t0 the head of the bolt D and turning it to the right, thereby forcing it farther into the clip and coupling-iron.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is v A thill-coupling, comprising a clip formed with a pair of spaced-apart ears one of said ears being formed with a threaded opening, a shaft-iron occupying the entire space between the said cars, a coupling-bolt provided with a threaded end, a tapered portion formed on the said bolt, an intervening portion formed between the said tapered portion and threaded end, said intervening portion being of lesser diameter than either the said tapered portion or the threaded end, andadapted to fit into the threaded opening when the coupling-bolt is used to take up the wear and a nut on the threaded end of the said bolt, substantially as described.

JOHN A. STEELE.

Witnesses:

F. G. OBRIEN, S. M. DIoKEY.

This groove 5 leaves the ta- 

